This is from the logs while the modems are working fine:
Nov 12 11:36:35 server FaxGetty[2902]: ANSWER: FAX CONNECTION DEVICE '/dev/dg/epca/ttyD000'
Nov 12 11:37:12 server FaxGetty[2902]: RECV FAX (00000466): from 0295257301, page 1 in 0:35, INF, 3.85 line/mm, 1-D MR, 14400 bit/s
Nov 12 11:37:12 server FaxGetty[2902]: RECV FAX (00000466): recvq/fax00345.tif from 0295257301, route to , 1 pages in 0:37
Nov 12 11:37:15 server FaxGetty[2902]: RECV FAX: bin/faxrcvd "recvq/fax00345.tif" "dg_epca_ttyD000" "00000466" "" "" ""
Nov 12 11:37:30 server FaxGetty[2902]: MODEM U.S. ROBOTICS 56K FAX /
Nov 12 11:38:11 server FaxGetty[2901]: ANSWER: FAX CONNECTION DEVICE '/dev/dg/epca/ttyD001'
Nov 12 11:38:50 server FaxGetty[2901]: RECV FAX (00000467): from 612 9476 0479, page 1 in 0:37, INF, 7.7 line/mm, 1-D MR, 14400 bit/s
Nov 12 11:39:19 server FaxGetty[2901]: RECV FAX (00000467): from 612 9476 0479, page 2 in 0:29, INF, 7.7 line/mm, 1-D MR, 14400 bit/s
Nov 12 11:39:19 server FaxGetty[2901]: RECV FAX (00000467): recvq/fax00346.tif from 612 9476 0479, route to , 2 pages in 1:07
Nov 12 11:39:22 server FaxGetty[2901]: RECV FAX: bin/faxrcvd "recvq/fax00346.tif" "dg_epca_ttyD001" "00000467" "" "" ""
Nov 12 11:39:34 server FaxGetty[2901]: MODEM ROCKWELL AC/K56/V2.210-V90_2M_DLS